Mercedes-Benz S-class W221 facelift (2009-2013) left rear footwell Wiring diagrams

1 2 3 4 CAN-B L CAN-B H 31 30 12 13 CAN-F L CAN-F H 15 14 13 12 15 CAN-B L CAN-B H 42 55 26 CAN-C H CAN-C L 6 12 CAN-B L CAN-B H 6 5 4 DATA 9 22 25 21 HD-AS ALARM SIREN W/AUXILIARY BATTERY (LEFT FRONT WHEELHOUSE) ATA (EDW) FUNCTION INDICATOR BLU WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/PNK WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DRIVER DOOR INFRARED SENSOR ENGINE HOOD OPEN/ CLOSED SWITCH (ATA) FUEL FILLER FLAP MOTOR FUSE 29 FUSE 80 GRN WIRE GRY WIRE GRY/BLU WIRE HEADLIGHTS SYSTEM HORNS SYSTEM HOT AT ALL TIMES HYBRID ENGINE HOOD CONTACT SWITCH (3.5L) INSTRUMENT CLUSTER LEFT FRONT DOOR CONTROL MODULE (IN LEFT FRONT DOOR) LEFT REAR FOOTWELL ME-SFI (ME) CONTROL UNIT (RIGHT REAR OF ENGINE COMPT) NCA WIRE PNK WIRE PNK/RED WIRE REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (CENTER TRUNK) RED WIRE RED/BLK WIRE RED/BLU WIRE SPIEGEL TRUNK LID CONTACT SWITCH TRUNK LID EMERGENCY RELEASE SWITCH TRUNK LID EXTERNAL OPERATION SWITCH UPPER CONTROL PANEL CONTROL MODULE VIO WIRE W/ HYBRID DERIVE WHT WIRE YEL WIRE YEL/WHT WIRE

1 2 CAN-C H CAN-C L 1 2 CAN-C L CAN-C H 13 14 CAN-B H CAN-B L 7 5 RFL-L RFL-L BACK UP LAMP BACKUP CAMERA VOLTAGE SUPPLY MODULE (LEFT SIDE OF TRUNK) BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM ELECTRIC CONTROL UNIT (VGS) FUSE GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES INTELLIGENT SERVO MODULE FOR DIRECT SELECT (TRANSMISSION HOUSING) INTERIOR PREFUSE BOX LEFT REAR FOOTWELL LEFT TAILLAMP REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE RED/WHT WIRE RIGHT TAILLAMP W/ BACKUP CAMERA WHT WIRE

1 2 3 4 VIDEO P VIDEO P GND VIDEO N VIDEO N GND 10 11 9 8 CAN-E H CAN-E L 30 31 15 CAN-E H CAN-E L 2 41 54 10 37 50 11 23 2 41 54 10 37 50 11 23 GND CAN-E H CAN-E L 5.5L 3.5L 75 74 88 43 64 39 77 78 64 42 87 15 AT DCM AT DCP ACCEL SET/ ACCELERATOR PEDAL SENSOR (TOP OF ACCELERATOR PEDAL ASSEMBLY) BLK WIRE BLK/GRN WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CAN H H CAN H L CAN-S-H CAN-S-L 31 COMPUTER DATA LINES SYSTEM CONTROL CONTACT CRUISE CONTROL SWITCH DECEL/ SET DTR DISTANCE POTENTIOMETER (IF EQUIPPED) FRONT BUMPER LEFT INNER RADAR SENSOR FRONT BUMPER RIGHT INNER RADAR SENSOR FUSE GRN WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES LEFT REAR FOOTWELL ME-SFI (ME) CONTROL MODULE (RIGHT REAR OF ENGINE COMPT) MR IPM MULTI-FUNCTION CAMERA (W/ SPEED LIMIT ASSIST) (FRONT CENTER OF ROOF) OFF ORG/ WIRE PNK PNK WIRE PNK WIRE PNK/BLU WIRE PNK/BRN WIRE PNK/GRN WIRE PNK/GRY WIRE PNK/YEL WIRE PWG+ (-) RADAR SENSORS CONTROL UNIT (SGR) (RIGHT TRUNK) REAR BUMPER LEFT OUTER RADAR SENSOR REAR BUMPER RIGHT OUTER RADAR SENSOR REAR PTS WARNING DISPLAY (W/ CITY ASSIST) RED WIRE RED/BLK WIRE RED/WHT WIRE RESUME FROM MEMORY THROTTLE VALVE ACTUATOR (ON THROTTLE BODY ASSEMBLY) VIO WIRE VIO/GRN WIRE VIO/WHT WIRE VIO/YEL WIRE W/ DISTRONIC PLUS W/ MULTI FUNCTION CAMERA W/O MULTI FUNCTION CAMERA WHT WIRE YEL WIRE

2 1 3 FIRE EXTINGUISHING SYSTEM DIAGNOSTIC INTERFACE AIR CONDITIONING SYSTEM AUTHORITIES PERIPHERALS SEPARATION POINT BLK WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/WHT WIRE ENGINE FIRE EXTINGUISHING SYSTEM TEMPERATURE SENSOR ENGINE FIRE EXTINGUISHING SYSTEM TEMPERATURE SENSOR (LEFT REAR OF ENGINE COMPT) EXTINGUISHING AGENT RESERVOIR FIRE EXTINGUISHING SYSTEM CONTROL MODULE FIRE EXTINGUISHING SYSTEM SWITCH FIRE EXTINGUISHING SYSTEM WARNING BUZZER FRESH AIR SYSTEM EMERGENCY CONTROL UNIT FRESH AIR SYSTEM/FIRE EXTINGUISHING SYSTEM EMERGENCY ACTIVATE BUTTON FUSE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT REAR FOOTWELL NCA WIRE PAS (GAS), SPECIAL SIGNAL SYSTEM CONTROL MODULE (LEFT FRONT OF TRUNK) PRESSURE MONITORING SWITCH 1 PRESSURE MONITORING SWITCH 2 REAR FIRE EXTINGUISHING SYSTEM TEMPERATURE SENSOR REAR FIRE EXTINGUISHING SYSTEM TEMPERATURE SENSOR (UNDER LEFT REAR OF VEHICLE) REAR FUSE BOX I RED WIRE RED/BLK WIRE RED/YEL WIRE SPECIAL VEHICLE MULTI-FUNCTION CONTROL MODULE (SVMCM (MSS)) SQUIB 1 (+) SQUIB 2 (-) VIO WIRE VIO/RED WIRE VIO/YEL WIRE W/O MEDIUM RESERVOIR SOLENOID VALVE W/ MEDIUM RESERVOIR SOLENOID VALVE WHT WIRE WHT/BLU WIRE

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE FRESH AIR SYSTEM BUZZER EMERGENCY WARNING BUZZER (CENTER OF DASH) FRESH AIR SYSTEM DIAGNOSTIC INTERFACE CONNECTOR FRESH AIR SYSTEM EMERGENCY CONTROL UNIT FRESH AIR SYSTEM EMERGENCY PRESSURE FUSE GRN WIRE GRN/BRN WIRE GRN/WHT WIRE GRY/ORG WIRE GRY/PNK WIRE HOT AT ALL TIMES IRRITANT GAS SYSTEM SOLENOID VALVE IRRITANT GAS SYSTEM SOLENOID VALVE DOUBLE CONTACT RELAY LEFT EXHAUST AIR FLAP MOTOR (LEFT SIDE OF TRUNK) LEFT EXHAUST AIR FLAP MOTOR POLARITY- LEFT EXHAUST AIR FLAP MOTOR POLARITY-REVERSING RELAY LEFT REAR FOOTWELL MEDIUM RESERVOIR SOLENOID VALVE OVERVOLTAGE PROTECTION DIODE OXYGEN CYLINDER PRESSURE SENSOR (LEFT FRONT OF TRUNK) REAR FUSE BOX I RED/BLK WIRE RED/BLU WIRE RED/YEL WIRE REVERSING RELAY RIGHT EXHAUST AIR FLAP MOTOR (RIGHT SIDE OF TRUNK) RIGHT EXHAUST AIR FLAP MOTOR POLARITY- RIGHT EXHAUST AIR FLAP MOTOR POLARITY-REVERSING RELAY VIO WIRE VIO/RED WIRE W/O MEDIUM RESERVOIR SOLENOID VALVE W/ MEDIUM RESERVOIR SOLENOID VALVE WHT/BLU WIRE

AIR CONDITIONING SYSTEM BLK/BRN WIRE BLK/PNK WIRE BRN WIRE BRN/GRY WIRE FUSE 4 GRY/GRN WIRE HEATED WINDSHIELD HEATED WINDSHIELD CONTROL MODULE HOT AT ALL TIMES INTERIOR PREFUSE BOX (RIGHT FRONT FOOTWELL) LEFT HEATED SIDE WINDOW LEFT REAR FOOTWELL LIN (-) LIN-DATA LIN (+) POWER DISTRIBUTION SYSTEM RED WIRE RED/WHT WIRE RIGHT HEATED SIDE WINDOW W/ SPECIAL PROTECTION

2 3 4 5 DATA - DATA + 2 4 1 AUTHORITIES PERIPHERALS SEPARATION POINT 30 30 30 31 31 (+) (-) BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/WHT WIRE FIRE EXTINGUISHING CONTROL MODULE FUSE 10 GRN WIRE GRN/RED WIRE GRY/BLU WIRE HOT AT ALL TIMES INTERIOR SPEAKER LEFT OUTSIDE MIRROR MICROPHONE LEFT REAR FOOTWELL MIKRO + MIKRO + MIKRO - NCA WIRE ORG/ WIRE OUTSIDE SPEAKER PAS (GAS), SPECIAL SIGNAL SYSTEM CONTROL MODULE (LEFT FRONT OF TRUNK) REAR FUSE BOX 1 RED WIRE RED/GRN WIRE RED/WHT WIRE RIGHT OUTSIDE MIRROR MICROPHONE WHT WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE

BLK WIRE BLK/GRY WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLUE LIGHT SEPARATION POINT BRN WIRE BRN/BLK WIRE BRN/WHT WIRE FRESH AIR SYSTEM EMERGENCY ACTIVE BUTTON GRN WIRE GRN/RED WIRE GRY/BLU WIRE LEFT KNEE BOLSTER EMERGENCY ALARM ACTIVE BUTTON LEFT REAR FOOTWELL MICROPHONE SEPARATION POINT NCA WIRE ORG/ WIRE OVER VOLTAGE PROTECTION DIODE POLICE BEACON SEPARATION POINT REAR FRESH AIR OUTLET EMERGENCY ALARM ACTIVE BUTTON RED WIRE RED/WHT WIRE RIGHT KNEE BOLSTER EMERGENCY ALARM ACTIVE BUTTON SPECIAL SIGNAL SYSTEM PUSH BUTTON CONTROL MODULE SPECIAL VEHICLE MULTI-FUNCTION CONTROL MODULE (SVMCM (MSS)) WHT WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 BSL R 3 BL ANTI-THEFT SYSTEM COMPUTER DATA LINES SYSTEM ANTI-THEFT SYSTEM WARNING SYSTEMS BLK WIRE BLK/GRN WIRE BLK/PNK WIRE BLK/RED WIRE BLK/WHT WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/PNK WIRE BRN/VIO WIRE BRN/YEL WIRE CAN-B H CAN-B L 15 54 31 CRUISE CONTROL SYSTEM ENGINE CONTROLS SYSTEM EXTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (3.5L) (LEFT REAR ENGINE COMPT) FUSE GK L GK R GRN WIRE GRN/BLU WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/PNK WIRE GRY/VIO WIRE GRY/WHT WIRE HD AS HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT AT ALL TIMES INTERIOR FUSE PREFUSE BOX (RIGHT FRONT FOOTWELL) HS + HS 1 HS 2 HS(+) INSTRUMENT CLUSTER SYSTEM INSTRUMENT CLUSTER, MIRRORS SYSTEMS KZL L LEFT REAR FOOTWELL MEMORY SYSTEMS NAVIGATION SYSTEM NSL R NSL L RFL L BI L RFL L BI R BSL L PASSIVE RESTRAINT SYSTEM PNK/RED WIRE POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM NAVIGATION, SOUND SYSTEMS POWER TOPS SYSTEM POWER WINDOWS SYSTEM REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (CENTER TRUNK) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE SEATS, MEMORY SYSTEMS SHIFT INTERLOCK SYSTEM ENGINE CONTROLS SYSTEM SIG SOUND SYSTEMS SOUND SYSTEMS EXTERIOR LIGHTS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM DEFOGGER SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM INTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM VOLUME CONTROL INTERMEDIATE CONNECTOR (W/ DVD) WHT WIRE

15 U U UDB EKP LAUF A S SL P AIR PUMP (CENTER FRONT OF ENGINE) AIR PUMP RELAY BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/WHT WIRE BRN/YEL WIRE CAN C H CAN C L CAN-I H CAN-E H CAN-C H EGS COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM CRASH CAN-I L CAN-E L CAN-C L D/S DS SIG EKP EKP LAUF ENGINE CIRCUIT 87 RELAY FUEL PRESSURE SENSOR (UNDER LEFT REAR OF VEHICLE) FUEL PUMP (FP) FUEL PUMP CONTROL MODULE (UNDER LEFT REAR SEAT) FUSE 20 FUSE 22 FUSE 21 STARTER CIRCUIT 50 RELAY FUSE 23 FUSE 24 FUSE 45 FUSE 55 GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/PNK WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED LEFT REAR FOOTWELL ME-SFI (ME) CONTROL UNIT (RIGHT REAR OF ENGINE COMPT) NCA WIRE ORG/ WIRE PREMAIR SENSOR (BEHIND RIGHT SIDE OF RADIATOR) PURGE CONTROL VALVE (LEFT FRONT OF ENGINE COMPT) PWG+ (-) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE SIG SUPPLEMENTAL RESTRAINTS SYSTEM SYSTEM TNA 50 RV VIO/GRN WIRE VIO/YEL WIRE YEL/RED WIRE